Birdwatch Note Rating
2025-01-31 16:15:09 UTC - NOT_HELPFUL
Rated by Participant: 1953972B4988DD54AB7DC3D5C4171035162833B335EF2040B1D74560577F2C64
Participant Details
Original Note:
The device shown is a LEVEL, it shows if the surface it is placed on is even side-to-side to the local gravity field. To determine if a surface is FLAT, one should use a Kemet Flatness Gauge* or an interferometer or autocollimator.** * https://www.kemet.co.uk/products/flatlapping/flatness-gauges ** https://www.mitutoyo.com/webfoo/wp-content/uploads/15004A.pdf
All Note Details